package com.wyh.cloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.DefaultProperties;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;

import java.util.concurrent.TimeUnit;

/**
 * @author wyh
 * @version 1.0
 * @date 2021/11/17 15:13
 */
@Service
@DefaultProperties(defaultFallback = "paymentInfo_GlobalHandler")
public class PaymentService {

    public String paymentInfo_OK(Integer id){
        int a = 10/0;
        return "线程池： "+Thread.currentThread().getName()+"  OK!!__id:  "+id;
    }

    @HystrixCommand(fallbackMethod = "paymentInfo_TimeoutHandler",commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds",value = "3300")
    })
    //@HystrixCommand
    public String paymentInfo_Timeout(Integer id){
        //int a = 10/0;
        int timeout = 3;
        try {
            TimeUnit.SECONDS.sleep(timeout);
        }catch (Exception e){
            e.printStackTrace();
        }
        return "线程池： "+Thread.currentThread().getName()+"  Timeout!!__id:  "+id+"耗时：  "+timeout+"s";
    }

    public String paymentInfo_TimeoutHandler(Integer id){
        return "线程池： "+Thread.currentThread().getName()+"  paymentInfo_TimeoutHandler!!__id:  "+id+"  超时访问!!!";
    }

    public String paymentInfo_GlobalHandler(){
        return "线程池： "+Thread.currentThread().getName()+"  访问异常，请稍后再试！";
    }

    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"), //是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"), //请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"), //时间窗口期，空窗期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"), // 失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(Integer id){
        if (id < 0){
            throw new RuntimeException("****id不能为负数");
        }
        String serialNumber = IdUtil.simpleUUID();

        return Thread.currentThread().getName()+"\t 调用成功流水号为： "+serialNumber;
    }

    public String paymentCircuitBreaker_fallback(Integer id){
        return "id不能为负数："+id;
    }
}
